Product features: 1. It has frequency compensation function. The frequency can be used in a wide range. It is divided into three ranges, which can be automatically switched or manually input: FMB:80-108Mhz; VHF: 110-299Mhz; UHF: 300-999Mhz 2. The dot matrix screen with 128 x 64 resolution can be used in outdoor strong light 3. Aluminum alloy shell, button, very novel and beautiful appearance 4. The TYPE-C charging interface has the ability to connect the upper computer Specification: Frequency range: 80MHz~999MHz VSWR display: 1.00~99.9 Maximum power: 120W Power error: less than10% Continuous sampling: 100 times/second Burst sampling: The leading edge of the signal triggers sampling, and the burst/continuous sampling is automatically converted. Frequency Compensation: Automatically measure the signal frequency and perform frequency compensation for power conversion. Sleep and wake up: Sleep after 3 minutes without any operation, and can be woken up by radio frequency or manually. Display: 128 X 64 LCD screen Key operation: single key. RF Interface: N-KF (50 ohms) TYPEC interface: USB cable charging, 200mA; Li-ion battery: 3.7V/350mAh Dimensions: 95X35X26 (mm) Net weight of single machine: about 120g Material: Metal colour: Black Package Contents: 1 x SWR Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.